Fixed an issue introduced in CCC 5.0.6 in which CCC was mishandling the encoding of a network volume whose username or hostname contained special characters (e.g. "some%20user@Airport%20Base%20Station.local"). That led to errors mounting the affected network volume during an automated backup task.

Errors related to creating a Recovery HD archive are now suppressed if those errors are the result of the user stopping the backup task while CCC was creating the Recovery HD archive.

We made some improvements to the postflight option that unmounts the destination volume. If the destination is an encrypted volume, the volume will now be immediately locked when unmounted (negating the need for a separate postflight script as referenced in our blog). If the destination is an ordinary volume and the only partition on an external device, the destination device should be more likely to spin down the disk.

Improved the efficiency of copying sparse files on APFS volumes. Sparse files appear larger than the amount of data they actually contain. In the wild, we've seen sparse files used by VMWare.

Notifications prompting you to reattach a missing source/destination will now be revoked when the task starts to run next (e.g. when you attach the missing disk).

Fixed a subtle timing issue that occurs when a scheduled task with an hourly run time limit starts a couple seconds early. A task with such a limit would previously have stopped immediately, claiming that it was running outside of its allowed time window.

The remote Macintosh option now handles IPv6 addresses more gracefully.

Addressed an edge-case scenario in which CCC would set overly-restrictive ownership/permissions settings on the destination root folder.

The Task Filter window now correctly shows the application of a system items exclusion filter when the destination is a NAS volume that is not currently mounted.

Fixed a behavior problem in the Task Filter window that arose after refreshing the size of a folder that had excluded items.